I´ve heard of a gorilla named Koko
Her trainers asked her what she wanted to have for birthday. She "said": a kitten
they tried to fool her and gave her plushie
She didn´t want it, so the trainers gave her a real kitten and she took care of her, never got angry off the kitten, even if she scratched her
one day, the kitten escaped and was hit by a car. the trainers asked her: how do you feel?
koko: sad
trainers: why?
koko: because the kitten is sleeping and doesn´t wake up
Her trainers asked her what she wanted to have for birthday. She "said": a kitten
they tried to fool her and gave her plushie
She didn´t want it, so the trainers gave her a real kitten and she took care of her, never got angry off the kitten, even if she scratched her
one day, the kitten escaped and was hit by a car. the trainers asked her: how do you feel?
koko: sad
trainers: why?
koko: because the kitten is sleeping and doesn´t wake up